Who makes high voltage MOSFETs?

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As far as I can tell - Ixys seems to have a monopoly on the high voltage MOSFET market. Same goes for IGBTs. They can make parts up to 4KV.

Do they have any competitors? Or are they all on their own out there? And can anybody make higher voltage FETs? It seems like relays are the only option once you go past Ixys's offerings.

Thanks!

edit: also - can anybody suggest any tricks regarding ways of using a MOSFET past its breakdown voltage, if your load is very high impedance? In my case - I'm switching the low side of a load, where the high side is held at a high voltage. I was thinking you could put a resistor between the drain and low side of your load, so as to limit the energy that the supply can transfer to your load. Does that make sense? I have never looked into the exact mechanics of what is happening when you kill a MOSFET - so I'm a bit blind here!

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Have you looked at IRF? Don't know if they make such beast but worth a look.

John Samperi

Ampertronics Pty. Ltd.

www.ampertronics.com.au

* Electronic Design * Custom Products * Contract Assembly

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John,

got any spare thyratrons in Your valves glory box?

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What voltage? What current? What switching time? Interesting problem.

Imagecraft compiler user

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Also Microsemi, to 1.2KV. Must be others.

Jim

 

Until Black Lives Matter, we do not have "All Lives Matter"!

 

 

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bobgardner wrote:
What voltage? What current? What switching time? Interesting problem.

VoltAge is unknown - but I'm interested in parts 500V and up. But I'm especially interested in 2KV+ parts. Load current is in the single digit microamps. Switching time should be 10ms or less. So - the only really demanding specification is the voltage...

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Sounds like a job for a cascode configuration, where you use a high performance (but moderate voltage) device as the primary switch to turn on a low performance (but high voltage) device in common base mode.

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